condition mean min max 4 h after light 530.4 530.4 530.4 8 h after light 511.0 470.3 551.7 12 h after light 658.1500000000001 499.6 816.7 4 h after dark 772.85 758.5 787.2 8 h after dark 915.4 707.2 1123.6 12 h after dark 1016.0 826.3 1205.7